/// <summary>
/// 取出后删除
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="session"></param>
/// <param name="key"></param>
/// <returns></returns>
public static T PopSession <T>(this HttpSessionState session, string key)
{
var value = session.GetSession <T>(key);
session.RemoveSession(key);
return(value);
}